Throttling device for pipes or tubes or pumps.



G. G. ADAMS.

l THROTTLING DEVICE PoR PIPBS., 0R TUBESv 0R PUMPS.

APPLICATION FILED MAR. 29, 1913.

1,095,767, Patented May 5,1914.

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G. C. ADAMS.

THROTTLING DEVICE FOR PIPES 0B. TUBES. 0R PUMPS. APgLIoATIoN FILED MAR.29, 1913. j

1 ,095,767. yPatented May 5, 1914 3 SHEETS-SHEET 2.

@9W @6fm/1m@ y G. C. ADAMS.

THROTTLING DEVICE PoR PIPEs 0R TUBES 0R PUMPS.

APPLICATION FILED MAR. 29, 1913.

1,095,767. Patented May 5, 1914.

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GEORGE COOKE ADAMS, 0F CHICAGO, ILLINOIS.

THROTTLING DEVICE FOR PIPES 0R TUBES OR PUMFS.

Specication of Letters Patent.

Patented May 5, 1914.

Application filed March 29, 1913. Serial No. 757,606.

To all whom t may conc-em:

Be it known that I, GEORGE Cooks. ADAMS, a subject of the King of GreatBritain, residing at Chicago, Illinois, United States of America, haveinvented certain new and useful Improvements in Throttling Devices forPipes or Tubes or Pumps, of which the following is a specification.

The object of this invention 'is to construct in an improved manner athrottling device or valve for pipes or tubes and for the deliverypassage of pumps which is capable of being `adjusted within the pipes ortubes from outside, to any curvature 0r angle to suit the flow ofliquid, so that the stream of Huid will not be suddenly obstructed aswith gate or iris diaphra valves, thereby. assisting the flow of thefiuid to a material'degree and without producing excessive eddies,churning or disturbance of the fiow. A further object of the inventionis to so construct the parts forming the improved throttling device thatsaid parts can be readily removed for renewal or repair without it beingnecessary to remove the pipe or tube, or only to remove the side platewhen applied to the delivery passage of a centrifugal pump.

My invention will be clearly understood from the following descriptionaided by the annexed drawings in which Figure 1 is a plan. Fig. 2 avertical section and Fig. 3"-an elevation at right angles to Fig. 2 ofaportion of a pipe or tube having my invention applied on two oppositesides. Figs. 4 and 5 are horizontal and vertical sections `|of a pumpequipped with my invention, taken, respectively, on the lines a/-a andb--b, Fig. 6, and Fig. 6 is a fragmental side elevation of the saidpump. Figs. 7 and 8 are;fragmenta1 detail views of modified formsf ofthrottling devices.

For the purpose of my invention I construct my throttling device from aseries of metal or other blocks or their equivalent in the form oflinks, which links are connected together by, rods r their equivalentsso as to form a strip capablefof being 'moved about itself or bodily toany curved 2 or angled position in the conduit to throttle same, thestrip being held in such positions by screws or other suitable means. orit may be by a rigid or spring strip movable to any curved or angledposition.

When .applying my invention to' a pipe -or tube I prefer to construct asocket 1 ofl square or oblong shape in cross section with the .throtthngdevices positioned on two opposite sides, the socket having roundflanges 2, 2, for connection to the conduit pipes or tubes.k

On the sides of the socket l where the throttling devicesv are to bepositioned I form an opening, the upper and lower edges of which areeach formed with a lip 3, and to each of these openings I alx a cover 4which carries the throttling appliance and the means for positioningsame.

As stated each throtthngappliance con-y sists of a number of blocks 5placed side b side in rows with their meeting ends mi way between themeet-ing edges of the neighboring rows, and the blocks 5 'are held t0-gether by rods 6 passed through holes at the ends of each block so lasto form one strip 5a. Certain of the rods 6 have two stems 7 pivotedthereto, and these stems are passed through cellars or glands 8 securedto the cover l and are connected together 1n pairs by a bridge 9. In thecenter of this bridgeis a screw 10 having a bearing 1n a screw threadedhole in the cover 4, so that on turning the screw 10 the stems 7 can bemoved to and fro in thecover 4: to position the strip of blocks 5 tovany angle or curve desired.

The strip of blocks 5 in dat condition is positioned within theopening,'r`leavin the bore of the socket 1 'full size, '1; he'en of thestrip being behind the li y's .3 and the sides lylng nearly Hush wit-hthe walls, and these lips 3 further retain the ends of t-he strip ofblocks 5 so'that they do 'not project into the socket in either positionin which .the throttling device is placed.

In Figs. 1, 2 and 3, I have shown two throttling devices in the socket1, but I may employ one only, in which case I require only one door.Each door is secured to the socket by bolts 14.

When applied to a pump as in Figs; 4, 5 and 6, which show a centrifugalpump of the Jennings type, I only employ one throttling device and thisI position in the delivery passage 11 through a cover, as in Figs. 1 to3, or by removing a portion of the lining 12 to leave 4a lip 3 at theedge and passing the' stems 7 and screws 10 through holesin the wall 13,in which case, by a removal of the side plate of the pump and the rods6, the parts can be readily disassembled.

appliance which will stand wear and tear` when subjected to the abradingetects of gritty fluids when flowing at high velocity,

and w1ll also allow of an easy removal of worn and broken part-s, andfurther the lineP of ,angle or curve of the throttling surface can bechanged at will to suit the material being passed through the pump, andthe area is gradually reduced in section and gradually expanded again toa'ord a free and easy transit of the luid or liquid.

The object of applying this throttle to the centrifugal pump is topermit the dischargearea to be adjusted as well as to raise or lower theposition of this reduced section.

Experiments have shown that for heads up to about 20 feet, a reductionof area equal to about'25% of blade area placed a little above the lipgives best results, while for heads running above 20 feet better resultsare obtained by a greater percentage of reduction and a lowering of .theposition of the reduced area.

A still further reduction of discharge area is desirable 'as theeffective area of the blades is reduced due to wearing away of theblades.

What I do claim as my invention and desire to` secure by Letters Patentis 1. The combination, with a tubular, duidconducting element; of athrottling device arranged in the bore thereof and embodying a strip,and adjusting means therefor comprising a pair of stems having theirinner ends engaged with the strip, a pair of collars through which saidstems are passed, a bridge connecting the outer ends of said stems, andan adjusting screw mounted in said bridge.

2. The combination, with a tubular, Huidconducting element; oit athrottling device arranged in the bore thereof and embodying a strip,and adjusting means therefor comprising a pair of stems having theirinner ends pivotally connected to the strip, a pair of collars throughwhich said stems are passed, a bridge connecting the outer ends of saidstems, and an adjusting screw mounted in-said bridge.

3. In a throttling device, the combination of a strip comprising aseries of pivotallyconnected lin'ks;-and adjusting means thereforembodying a pair of stems having their inner ends engaged with thestrip, a pair of collars through which said stems are passed, abridgeconnecting the outer ends of said stems, and an adjusting screw mountedin said bridge.

4. In a throttling device, thecombination of a strip comprising 'aseries of blocks arranged side by side 'in rows, and rods connectingsaid rows; and adjusting means therefor embodying a pair of stems havingtheir' inner ends engaged with the strip, a pair of collars throughwhich said stems are passed, abridge connecting the outer ends of saidstems, and an adjusting screw mounted in said bridge.

5. The combination, with a tubular, Huidconducting element; of atlirottling device arranged in the. bore thereof and embodying a stripvcomprising a series fof blocks arranged side by side in rows, rodsconnecting said rows, and means connected with said rods'for adjustingthe position of said strip.

6. In a throttling device, the combination of a strip comprising aseries of blocks arranged side byside in rows, and rods connecting saidrows; and adjusting means therefor embodying a pair of stems connectedat their inner ends-to certain of said rods, a pair of collars throughwhich said stems are passed, a bridge connecting the outer ends of saidstems, and an adjust-ing screw mounted in said bridge.

In testimony whereof vI have hereunto set my hand in presence of twosubscribing witnesses.

GEORGE @DUKE ADAMS. Witnesses:

HORACE NUGENT, HUGH CAssELLs.

